The department has been consistently recognized as the first department in the school for its outstanding contributions to training and academic work, a testament to the collective efforts of department heads, academics, lecturers, and students.
In the academic year 1951-1952, the Faculty of Teacher Training for Grades 5-7 at the Teacher's Institute and Teacher's Evening School was discontinued. In its place, a 3-year Teacher's Institute was established to prepare teachers for Grades 5-7. The institute commenced operations in the building previously occupied by the Government.
During the inaugural academic year of the Teacher's Institute, a single branch, Mathematics- Physics, operated with over 40 students and three teachers. In the subsequent academic year (1952-1953), G. Byambaa, a graduate of the State University in 1952, joined as a teacher specializing in Mathematics and Physics. The Department of Mathematics- Physics underwent division into two separate entities—the Department of Physics and the Department of Mathematics—starting from the academic year 1960-1961.
In 1991-1993, G. Batbyamba, the dean of the Faculty of Physics and Mathematics, established the "Natural Science Teaching and Research Center" by incorporating the departments of General Physics and Theoretical Physics from the Faculty of Physics and Mathematics, as per Rector's Order No. 161 of 1993. Concurrently, the branch of Mathematics gained autonomy and was designated the "Department of Mathematics and Computer Science," with J. Baatar appointed as its head.
The Department of Mathematics and Computer Science underwent transformation into the Faculty of Mathematics in August 1994. Since the conclusion of 2001, it has been restructured as the School of Mathematical Statistics. The leadership succession saw Ts. Batkhuu (2004-2006), S. Togmid (2006-2009), and B. Sandagdorj (2009-2014) serving as directors.
In 2006, Associate Professor B. Horoldagva from the department contributed significantly by publishing research on P. Hansen's hypothesis and its extension, along with graph topology indices, in eight journals indexed by Thomson Reuters (IF-JCR). The groundbreaking work, titled "Direct comparison of the variable Zagreb indices of cyclic graphs," presented at the World Congress of Mathematicians in South Korea in August 2014, earned him recognition and the award named after the president of MNUE for the selection of the best academic articles.
Since 2012, the department's faculty members have authored and published over 20 books and textbooks, contributing valuable resources to the academic community.
